This unabridged version of an April 2010 article published in Joint Force Quarterly, the magazine of the Chairman of the Joint Chiefs of Staff, describes how two big ideas—endurance and resilience—can turn the DoD's energy costs and vulnerabilities into sources of breakthrough advantage, major savings in blood and treasure, and a safer world. The article as it appeared in Joint Force Quarterly (RMI document ID 2010-07) is available to download here.